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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
19/04/2024, 07:39
Behavioral task
behavioral1
Sample
2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe
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Size
96KB
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MD5
b9b14909be833659df678c64a37e0b17
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SHA1
58a76e0890b0f4ae39307b015f756215d453bd94
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SHA256
afb7545cd4d174f830cf1b4ec248feecbad2fd855386fd4494bf22ccc0e8b0f5
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SHA512
771bbdf0cbce6740706d8278c18c5ffa54981e71de1322028a041b21db338394c3acd2fe55ae2f1084e5250a3f2c98f58de21987511090abac3ede01ca5d0cdb
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bS:zCsanOtEvwDpjB+
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001224c-11.dat CryptoLocker_rule2 behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b00000001224c-11.dat CryptoLocker_set1 behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b00000001224c-11.dat UPX behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2956 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2852 2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe -
resource yara_rule behavioral1/memory/2852-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b00000001224c-11.dat upx behavioral1/memory/2852-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2956-20-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2852 wrote to memory of 2956 2852 2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe 28 PID 2852 wrote to memory of 2956 2852 2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe 28 PID 2852 wrote to memory of 2956 2852 2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe 28 PID 2852 wrote to memory of 2956 2852 2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-19_b9b14909be833659df678c64a37e0b17_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2852 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2956
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
96KB
MD5f27b7a1f420b3fcd0209c26db33be431
SHA1f207e13c0c0a4d2b7f7e89481cd11d7b3534a867
SHA25634664888d9e17938075008a9b11448c54d110be1d23bc728f2e96d4ab8dcd9d9
SHA51275a384cd99531309d2d395d5252298d1526cdd4ee7913de1811fb6dd6e683483a214739761ed0777c33a723cd6cc80c0ed36b564e89cc77f015c884d0a6f2c05